Stress Evaluation in a Bulk High Tc Superconductor with Anisotropic Poisson's Ratio

In magnetization process by field cooling of a bulk high-Tc superconductor (HTS), stresses are induced by the Lorentz force between shielding currents and magnetic fields. Stresses in a cylindrical bulk HTS are numerically evaluated in the axisymmetric three-dimensional analysis. Shielding current distributions are obtained through a macroscopic numerical simulation with the Maxwell equations and the critical state model. The stress distributions are obtained through numerical analysis with the finite- difference method. Maximum stresses are discussed for the case with anisotropic Poisson's ratio of the bulk HTS.